Chroococcales: Gloeocapsa, Microcystis
The order Chroococcales includes the most primitive members of the class Cyanophyceae. Almost all the members of the order are fresh water forms which are unicellular and are often organised into regular colonies; but they never show a trichome organisation. They reproduce chiefly by fission or by endospore formation. Heterocysts and hormogonia are absent. The … Read more